1850166 - Wheel scroll action with an origin of type "pointer" fails with: "InvalidArgumentException: Expected x to be finite number"

Status: RESOLVED FIXED

(Remote Protocol :: Agent, defect, P1)

Description

[Henrik Skupin [:whimboo][⌚️UTC+2]]

While working on testcases for bug 1848957 I noticed that wheel actions are failing when the origin is pointer. Here a simplified Marionette testcase:

    def test_origin(self):
        wheel_chain = self.marionette.actions.sequence("wheel", "wheel_id")
        wheel_chain.scroll(15, 30, 20, 40, origin="pointer").perform()

The failure that results from that call to scroll():

ERROR testing/marionette/harness/marionette_harness/tests/unit/test_actions_wheel.py TestWheelAction.test_origin - marionette_driver.errors.InvalidArgumentException: Expected x to be finite number
stacktrace:
	RemoteError@chrome://remote/content/shared/RemoteError.sys.mjs:8:8
	WebDriverError@chrome://remote/content/shared/webdriver/Errors.sys.mjs:189:5
	InvalidArgumentError@chrome://remote/content/shared/webdriver/Errors.sys.mjs:380:5
	assert.that/<@chrome://remote/content/shared/webdriver/Assert.sys.mjs:485:13
	assert.number@chrome://remote/content/shared/webdriver/Assert.sys.mjs:204:43
	assertInViewPort@chrome://remote/content/shared/webdriver/Actions.sys.mjs:2142:15
	dispatch@chrome://remote/content/shared/webdriver/Actions.sys.mjs:1156:21
	dispatch/pendingEvents<@chrome://remote/content/shared/webdriver/Actions.sys.mjs:1836:14
	dispatch@chrome://remote/content/shared/webdriver/Actions.sys.mjs:1835:39
	dispatch/chainEvents<@chrome://remote/content/shared/webdriver/Actions.sys.mjs:1761:27
	dispatch@chrome://remote/content/shared/webdriver/Actions.sys.mjs:1763:7
	performActions@chrome://remote/content/marionette/actors/MarionetteCommandsChild.sys.mjs:501:23

Comment 2

[Henrik Skupin [:whimboo][⌚️UTC+2]]

Turns out that there is an issue in the WebDriver classic specification around the calculation of the target coordinates.

I've filed a new issue for it: https://github.com/w3c/webdriver/issues/1758

Unless it's clear how it should work this bug is blocked. Lets discuss it next week when James is back.

Comment 3

[Henrik Skupin [:whimboo][⌚️UTC+2]]

As discussed the current design in the WebDriver specification is not great. But it might also be hard to change it at this time given that it would cause backward incompatibilities. Also there could be multiple pointers chains so it would not be clear which position actually to take.

In the short term we probably should just fail with an unsupported operation if origin="pointer" has been specified for a scroll action. I can provide a patch for the classic specification, and also add a test for both classic and BiDi.

For a longer term solution I added an agenda item to the TPAC discussion.

Comment 4

[Henrik Skupin [:whimboo][⌚️UTC+2]]

The PR for WebDriver classic is up at https://github.com/w3c/webdriver/pull/1760.

Comment 5

[Henrik Skupin [:whimboo][⌚️UTC+2]]

Attachment: Bug 1850166 - [remote] Raise "invalid argument" error when "pointer" origin is used by a "wheel" input source.

Comment 6

[Henrik Skupin [:whimboo][⌚️UTC+2]]

Attachment: Bug 1850166 - [wdspec] Add test for "invalid argument" for wheel scroll action and origin type "pointer".

Depends on D187391

Comment 7

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/984cc66d1fc1
[remote] Raise "invalid argument" error when "pointer" origin is used by a "wheel" input source. r=webdriver-reviewers,jdescottes
https://hg.mozilla.org/integration/autoland/rev/d3a6da63a125
[wdspec] Add test for "invalid argument" for wheel scroll action and origin type "pointer". r=webdriver-reviewers,jdescottes

Comment 8

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Created web-platform-tests PR https://github.com/web-platform-tests/wpt/pull/41879 for changes under testing/web-platform/tests

Comment 9

[Iulian Moraru]

https://hg.mozilla.org/mozilla-central/rev/984cc66d1fc1
https://hg.mozilla.org/mozilla-central/rev/d3a6da63a125

Comment 10

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Upstream PR merged by moz-wptsync-bot